Wrench.



LUIGI CAPPAIBIANCO, 0F BBIDGEFORT, CONNECTICUT.

\VRENCH.

Specification of Letters Patent.

Patented Dec. 15, 1914.

Application filed July 20, 1914. Serial No. 851,920.

T 0 all whom it may concern Be it known that I, LUIGI Carranranoo, acitizen of the United States, residing at Bridgeport, county of Fairfield, State of Connecticut, have invented an Improvement in renches,of which the following is a specification.

This invention has for its object to provide a strong and durable wrenchcapable of a fine adjustment and provided with means for rigidly lockingthe movable jaw after adjustment so that there will be no play whateverof the parts.

With these and other objects in view I have devised the novel lockingwrench which I will now describe, referring to the accompanying drawingforming a part of this specification and using reference characters toindicate the several parts:

Figure 1 is a view of my novel wrench partly in elevation and partly insection and illustrating the construction and mode of operation thereof,and Fig. 2 is an elevation, partly broken away, as seen from the rightin Fig. 1.

10 denotes the body, which is provided with a longitudinal hole 11 and acircular shoulder 12 within the hole, and 13 the fixed jaw which isformed integral therewith.

14 denotes the movable jaw which is carried by a shank 15 adapted toslide in the hole and is provided at its inner end with a reducedthreaded portion 16 which engages an internally threaded sleeve 17 lyingwithin the hole and having a head 18 adapted to engage the shoulder.

At the outer end of the bodyand in alinement therewith is a rotatablehand piece 19 which also has a longitudinal movement. This hand piece isprovided with a longitudinal hole 20 continuous with hole 11 in the bodyand is provided at its upper end with lugs 21 adapted to engagecorresponding recesses 22 at the lower end of the body.

Sleeve 17 is retained against longitudinal movement by means of aholding sleeve 23 which lies in holes 11 and 20 and between sleeve 17and the body and hand piece. The inner end of the holding sleeve engagesthe opposite side of shoulder 12 from head 18 and the parts are retainedin place by a pin 24; which passes through the holding sleeve and sleeve17 and the ends of which lie in longitudinal slots 25 in the hand piece.The longitudinal movement of the shank, carrying the fixed jaw, in thebody is limited by means of a pin 26, which passes through the shank andthe outer end of which lies in a slot 27 in the body. A hole 28 isprovided in the opposite side of the body to enable the pin to be drivenout in disassembling when the pin is in alinement with the hole. At thelower end of the hand piece is an inwardly turned circular flange 29,the inner side. of which is engaged by a collar 80 on a stud 31 havingatits outer end a knurled head 32 and at its inner end a reducedthreaded portion 33 which is adapted to engage the thread of sleeve 17.As shown in the drawing,the thread of this sleeve is. not continuous.That, however, is an immaterial detail of construction.

The operation isv as follows: Rotation of the hand piece carries theinternally threaded sleeve which is retained against longitudinalmovement by the holding sleeve in cooperation with the shoulder,consequently through the engagement of the thread of the shank with theinternally threaded sleeve, the movable jaw will be moved inward oroutward, as may be required. To look the parts in place'after adjustmentthe hand piece is moved longitudinally to place the lugs thereon inengagement withthe recesses at the lower end of the body. This movementof the hand piece may be effected by rotation of stud 31 by means of theknurled head, or if preferred, owing to the longitudinal movement thatis provided for the hand piece, said part may be moved to the lockingposition by hand and held there if the use is temporary, or locked thereby rotation of the stud, the effect of which is, through engagement ofthe threaded portion of the stud with the internally threaded sleeve, tomove the knurled head into engagement with the lower end of the handpiece, and then to move the hand piece longitudinally until its movementis stopped by the engagement of the lugs with the recesses. To changethe adjustment of the jaws the hand piece must be moved backward todisengage the lugs and the recesses, which leaves the jaws free to bemoved in either direction, as may be required, by rotation of the handpiece.

Having thus described my invention I claim:

1. A wrench comprising a body carrying a aw, a theaded shank slidable inthe body and carrying a jaw, a hand piece in almement with the body, athreaded stud rotating in the hand-piece, an internally threaded sleevewithin the body and the hand piece and engaged by the threads of theshank and the stud, means for retaining the sleeve against longitudinalmovement and a connection between the hand piece and the between thehand pieceand the sleeves A wrench comprising a body carrying a jaw andhaving a recess in its lower end, a

threaded shank sli'dable in the body and carrying a jaw, a hand piece inalinement with the body and having alu adapted to engage the recess andslots in opposite sides, a threaded, studrotating-in the hand piece,

an internally threaded sleeve wit-hinthe body. and the hand piece andengaged by the threads of the shank and the stud, means for retainingthe sleeve against'longitudinal movement and a pin passing through theslots in the hand piece and through the sleeve.

4. A wrench comprising a body carrying a jaw, a threaded shank slidablein the body flopies ot'thisr iatent may b e obtained for five centseach, b addressing the) Commissioner df r'at'e'nts,

and'carrying a jaw, a rotatable and'longitudinal'lyw movable hand. piecein alinement with the body, said hand piece and body having respectivelya locking projection and a recess a rotatable threaded stud in the handpiece, an internally threaded sleeve within the body and the hand pieceand ena recess, and said hand piece having an: in

wardly turned flange at its outer end, a rotatable threaded studi havinga collar within the flange and a knurled head," an internally threadedsleeve Within the body and the hand piece and engaged by the threads ofthe shank and the stud, means for retaining the sleeve againstlongitudinal movement, and a conn ectiomcausing, the sleeve to berotated by the hand piece, forwardrotation of the stud causing'the handpiece to engage the'body and interlock.

Intestimony whereof I aflix my signature in presence of twovwitnesses.

' LUIGI CAPPABIANCO. Witnesses: g

H. W. MEADE, E. M; OULvER.

Washington, D. 0'.

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